Random node + optimizations.

Normand Briere

2019-08-14 0c1f740dd6ddd6432dc29266e42ef851e26027bb

 Box.java
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@@ -1,5 +1,6 @@
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 public class Box extends Object3D implements java.io.Serializable
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 {
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+    static final long serialVersionUID = 0;
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     Box()
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     {